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2 cards from this section. Quick, good the night before a test.
What is the formula for mass flow rate?
Remember the relationship involving density, area, and velocity.
What type of flow is assumed when density is constant?
Think about liquids and how their densities behave.
What is the primary factor determining thrust in a fluid jet?
Think about what happens to the mass flow as fluid speeds up.
True or False: In incompressible flow, the speed of the fluid can change without affecting density.
Consider how liquids behave under pressure.
A spacecraft is moving at 900 m/s, and a solid fuel engine expels gases at 70 kg/s. If the gases exit with a speed of 3000 m/s, calculate the thrust generated by the rocket engine.
Break down the components to calculate thrust correctly.
If a water jet of 0.01 m² area strikes a plate at 25 m/s, and water density is 1000 kg/m³, determine the force applied to the plate due to the water jet.
Use mass flow rate to derive thrust.
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